[Bug 91617] [BDW] Incorrect rendering in CS:GO

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91617

--- Comment #2 from Matthieu Bouron <matthieu.bouron at gmail.com> ---
Here are some screenshot that highlight a bit more the issue (ivy bridge is on
the left and broadwell is on the right):

http://0x5c.me/intel2/02.png
http://0x5c.me/intel2/03.png
http://0x5c.me/intel2/04.png
http://0x5c.me/intel2/05.png

Here are some information about the setup:

The machine is a Lenovo T450s with an Intel(R) Core(TM) i7-5600U @ 2.60GHz with
12gb of ram running Arch linux. It is installed/booted using the legacy bios
method (can it have an influence ?)

Mesa version is git as of df97126731a745c1797c783414a44652be039d84.
libdrm version is 2.4.63
xf86-video-intel version is based on git master as of last week.

I also experience better framerates with the ivy bridge setup (Intel(R)
Core(TM) i7-3520M CPU @ 2.90GHz). At the same resolution, using the same video
settings on the following benchmark test
http://steamcommunity.com/sharedfiles/filedetails/?id=500334237:
  * the ivy bridge setup gives 42fps average.
  * the broadwell setup gives 31fps average.

The same performance difference appears running glxgears fullscreen (same
resolution) with vblank_mode=0

There is not trace of cpu throttling in dmesg during the tests.
The gpu frequency seems to be stuck at 950mhz during the test most of the time.
It varies from time to time to 900mhz (using the intel_gpu_frequency tool).

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/intel-3d-bugs/attachments/20150818/96f58777/attachment-0001.html>